Home / 1,910.49-2,865.39-677.91

Finding the Fourth Proportional to 1,910.49, 2,865.39 and 677.91

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Solution

The fourth proportional to 1,910.49, 2,865.39 and 677.91 is: 1,016.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.49 : 2,865.39 = 677.91 : x
  2. Step 2: Convert to fraction form
    1,910.49/2,865.39 = 677.91/x
  3. Step 3: Cross multiply
    1,910.49x = 2,865.39 × 677.91
  4. Step 4: Simplify right side
    1,910.49x = 1,942,476.53
  5. Step 5: Solve for x
    x = 1,942,476.53/1,910.49
  6. Step 6: Final answer
    x = 1,016.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.